产品推荐 | 液氮回凝制冷机

SIM-MAX LN-C 型液氮回凝制冷机，是利用常规液氮与电气致冷相结合而形成的混合制冷器，是低温冷却探测器领域中的一大革命性突破。该产品采用斯特林型低温制冷机作为主要工作部件，使冷端温度低至液氮温度，从而将液氮罐内气态的氮气冷凝为液氮，实现了液氮的循环利用。

● 制冷机工作寿命不少于 12 万小时

● 不断电情况下可连续为探测器制冷 12 个月，无需补充液氮

● 30升液氮罐，充满液氮后，在断电情况下液氮保证探测器的低温环境，保证系统连续正常运行10天

● 双电机对置脉管制冷

● 冷凝回收挥发的氮气并循环利用

● 软件实时监控制冷系统工作状态，可远程监控和调节

● 系统运行数据自动记录和历史数据读取

● 可手动和自动双模式控制

● 接口定制化设计，可匹配各类高纯锗 γ 谱仪

● 与液氮制冷相比，回凝制冷在保证液氮制冷可靠性能的情况下，很好地避免了频繁添加液氮的工作，保证探测器长期工作在低温状态，节约了液氮材料以及人力消耗成本

● 与电制冷相比，回凝制冷利用液氮为介质，避免了探测器和制冷机的直接接触，极大地降低了震动对探测器性能的影响。同时，解决了电制冷器在电力故障情况下失去致冷能力的一大弊病，保证在断电情况下仍可维持探测器低温环境，以便电力恢复后可快速使用

SIM-MAX LN-C

Liquid Nitrogen Recondensation Refrigerator

Product Descripition：

SIM-MAX LN-C Liquid Nitrogen Recondensation Refrigerator is a hybrid refrigerator that combines conventional liquid nitrogen and electric cooling, representing a revolutionary breakthrough in the field of cryogenic cooling for detectors. Featuring a  Stirling-type cryocooler as the main working component, the system cools the cold end to liquid nitrogen temperature, enabling the recondensation of evaporated nitrogen gas back into liquid nitrogen within the dewar,  thereby achieving liquid nitrogen recycling.

Functional Features：

● Service life of the refrigerator exceeding 120,000 hours.

● Continuous cooling for up to 12 months without interruption, eliminating the need for liquid nitrogen refilling under normal operation.

● Equipped with a 30 L liquid nitrogen dewar. When fully filled, it can maintain the detector at low temperature for up to 10 days in the event of a power outage.

● Dual opposed motors for pulse tube refrigeration.

● Efficient recondensation and recycling of evaporated nitrogen gas.

● Real-time system monitoring via software, with support for remote monitoring and control.

● Automatic recording of system operation data and access to historical data.

● Dual-mode control: manual and automatic operation.

● Customized interface design, compatible with various high-purity germanium gamma spectrometers.

Main Advantages:

Compared with pure liquid nitrogen cooling, recondensation cooling maintains the reliability of liquid nitrogen cooling while eliminating the need for frequent liquid nitrogen refilling. It ensures long-term stable low-temperature operation of the detector and significantly reduces both liquid nitrogen consumption and labor costs.Compared with electric cooling, recondensation cooling uses liquid nitrogen as the cooling medium, avoiding direct contact between the detector and the refrigerator, thus minimizing vibration-induced performance degradation. Moreover,  it overcomes the critical drawback of electric coolers during power outages by maintaining the detector at low temperature, enabling rapid system recovery once power is restored.

Application Areas：

● Designed for integration with  high-purity germanium (HPGe) detectors.

● Suitable for use with  other scientific instruments operating at liquid nitrogen temperature.